Undead Labs' State of Decay 2 might look like an action game at first glance, but its deep survival elements make it much more challenging than something like Dead Rising. Here is how to succeed from the very beginning.

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The biggest movie of all time for Marvel Studios had one of the most successful premieres of all time, with Avengers: Infinity War passing multiple box office milestones on its way to setting a new opening weekend record.

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Age of Wonder: Planetfall will let you build a new civilization from the ruins of a ravaged planet after a cosmic dark age in a 4x turn-based strategy game coming next year for consoles and PC from publisher Paradox.

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Fall semester is beginning, and besides the funds you've set aside for food and beer, you're going to need a nice chunk set aside for the bane of all college students: textbooks. Pounds and pounds of textbooks.

More recently, e-readers have promised to liberate college students from the heaving bundles of pages that most of them lug home from the bookstore at the beginning of every semester. From Amazon's Kindle DX to Barnes & Noble's Nook and even the iPad, a generation of digital readers promises to replace overstuffed backpacks full of musty textbooks with a lightweight, portable slate loaded with every book you'll ever need for the entire semester – or every semester, for that matter.

But can you really just download the books you need for class? Are they cheaper? Do digital textbooks make any sense to begin with? We ran the numbers, considered all the factors, and the answers don't all point to "buy." Here's everything you should consider before springing for an e-book reader this semester.

Portability

Nobody wants to hoof it to class looking like a hunchback, with 30 pounds of textbooks sagging off your back in a bag that looks like it's about snap at the seams – if your spine doesn't give out first. And therein lays the primary appeal of the e-book reader: Rather than 30 pounds, you'll likely have just over one pound, in a package that's typically as slim as a magazine. Readers like the Kindle DX weigh just 1.1 pounds, while the big daddy of the bunch, the iPad, hits only 1.5 pounds. A package that weighs and feels smaller than an average textbook can literally take the place of thousands of them. Thank, you technology.

Cost

Sure, Amazon's Kindle DX will cost your $379 out of the gate, and Apple's iPad will cost at least $500, but you'll earn it back over time, right? Good question.

We made up an example schedule based on books a Syracuse University freshman might need for different introductory courses, to see how much you would actually save versus buying paper copies. The verdict: Money might not be a great reason to look into an e-reader.

We signed up for Spanish, writing, philosophy, religion and political science courses. The total tab for all the books we could buy online from the SU bookstore with one click came to $368.45. This included a total of 15 titles, buying used books whenever possible.

Then we went shopping on Amazon's Kindle store. We had intended to compare the total cost of buying print versus digital, but the digital catalog was so incomplete we ended up comparing individual titles.

When comparing brand new, hefty textbooks, an e-reader can save a bundle. For instance, Writing Analytically would cost us $66.50 brand new from the SU book store, but we could download an e-book version instantly for just $46.30 on the Kindle. Total savings from just one book: $20.20.

Factor in the used-book market, and savings dwindle a little more. Let's use Immigrant America: A Portrait as an example. It sells for $24.95 brand new from the Amazon store and the campus store. But the SU book store offered it to us used – automatically – for $18.75. Had we bought it for a Kindle, we could have scored it for $14.82 – savings of only $3.93 over the used paper copy.

Even those small savings dissipate when you consider that most students will sell their books after a semester. With Immigrant America, we could have turned around and sold our used paperback for $8.64 through online buyer AbeBooks, reducing our total cost to just $10.11 for a semester of use. We would actually pay more with the Kindle, since we can't turn around and sell our digital copy. Even online rental services can't match that: Chegg wanted $21.99 for a semester rental, CampusBookRentals wanted $18.92, and BookRenter wanted $18.95.

The bright spot for e-readers turns out to be old titles, which you can actually get for extremely cheap or even free. For instance, we could download The Book of Tea for free from Amazon, or pay $3.75 for the paperback. Ghandi's autobiography was only 95 cents through the Kindle store, or $12 for the paperback.

Had we bought every single book possible through the Kindle store, we would have saved a grand total of $35.03 for the semester. That's giving e-books the benefit of the doubt by comparing to only new paperback prices and not factoring in resale value. Other classes might offer more books online, but even if we were able to save double that every semester – $70 – we wouldn't recoup the cost of the Kindle DX until six semesters in.

Availability

If the above example didn't spell it out for you, or if you just want the Clif notes: You can't just hop on Amazon or Barnes & Noble and buy all your books online. In fact, you can barely buy any of them.

Of the 20 books required for our courses, the SU bookstore offered 15 of them online in paper version. Amazon's Kindle store offered four. So did Barnes & Noble.

The selection is bound to improve with time, but keep in mind that some materials won't translate as readily. For instance, our Spanish materials included a CD loaded with video and workbooks, and some professors print specialized readers that only ever see distribution on college campuses. While we would like to think the videos could all eventually stream, the workbook sheets could be printed, and that professors might adopt the e-book format themselves, the slow-grinding, bureaucratic gears of academia and general fussiness of crotchety old professors suggests paper will reign in college for years to come.